Both samples are looking great! I tested out the 1080p sharp and sharper samples on my Nvidia Shield last night, as well as the 1440p ones on my PC just now. I prefer the sharper preset, actually! Didn’t notice any ringing on my Shield or my PC.
One thing though is that I was getting crashes with the sharper preset on my Shield. I’m pretty sure it consistently crashed when playing Super Castlevania, but the sharp preset I think crashed once and that was it. I’m using bsnes though, which I likely shouldn’t be. Haven’t tested it with snes9x to see if it would make a difference.